4 AM GMT to BST

Greenwich Mean Time

Fri Jun, 19, 2026
4:00 AM

Greenwich Mean Time (GMT)

GMT is the same time as Universal Time (UTC).

British Summer Time

Fri Jun, 19, 2026
5:00 AM

British Summer Time (BST)

BST is 1 hour ahead of Universal Time (UTC+1)

GMT to BST Time Conversion

When it is 12:00 PM in GMT, it is 1:00 PM in BST.

📞The best time to schedule a call is between 9 AM and 4 PM in GMT, which is between 10 AM and 5 PM in BST.

Time difference between GMT and BST

GMT is 1 hour behind BST.

🕐 Add 1 hour to GMT time to get BST time.

GMT uses the same time as Universal Time (UTC). and BST uses 1 hour ahead of Universal Time (UTC+1).

GMT to BST time conversion chart (24 hours)

Highlighted rows are overlapping 9-to-5 business hours – the best time to schedule a call between GMT and BST.
GMT Time BST Time
12 AM GMT Time 1 AM BST Time
1 AM GMT Time 2 AM BST Time
2 AM GMT Time 3 AM BST Time
3 AM GMT Time 4 AM BST Time
4 AM GMT Time 5 AM BST Time
5 AM GMT Time 6 AM BST Time
6 AM GMT Time 7 AM BST Time
7 AM GMT Time 8 AM BST Time
8 AM GMT Time 9 AM BST Time
9 AM GMT Time 10 AM BST Time
10 AM GMT Time 11 AM BST Time
11 AM GMT Time 12 PM BST Time
GMT Time BST Time
12 PM GMT Time 1 PM BST Time
1 PM GMT Time 2 PM BST Time
2 PM GMT Time 3 PM BST Time
3 PM GMT Time 4 PM BST Time
4 PM GMT Time 5 PM BST Time
5 PM GMT Time 6 PM BST Time
6 PM GMT Time 7 PM BST Time
7 PM GMT Time 8 PM BST Time
8 PM GMT Time 9 PM BST Time
9 PM GMT Time 10 PM BST Time
10 PM GMT Time 11 PM BST Time
11 PM GMT Time 12 AM BST Time

GMT to BST - Frequently Asked Questions

Q

What is the time difference between GMT and BST?

A

GMT is 1 hour behind BST.

Q

Is GMT ahead of or behind BST?

A

GMT is behind BST by 1 hour.

Q

When it is 9:00 AM in GMT, what time is it in BST?

A

It is 10:00 AM in BST.